UE Power Saving via Configured Time Gaps in 5G NR Scheduling
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Solution Overview
Problem
Current 5G New Radio (NR) technologies face challenges in efficiently scheduling physical downlink shared channels (PDSCHs) for user equipment (UEs) with reduced processing capabilities, leading to increased power consumption and complexity in handling wideband PDSCH transmissions.
Innovation Solution
Implementing a scheduling scheme that includes configured time gaps between slots to accommodate the limited processing bandwidth of reduced capability UEs, allowing for dynamic adjustment of PDSCH and PDCCH bandwidths and incorporating multi-slot PDSCH scheduling to reduce overhead and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wideband PDSCH transmissions are scheduled for reduced capability UEs, then data transmission capacity is improved, but power consumption increases and processing complexity increases
Solution Approach 1:
The patent segments the PDSCH transmission across multiple slots instead of delivering wideband data in a single slot. The base station schedules PDSCH transmissions in multiple slots with configured time gaps, allowing the reduced capability UE to process data in smaller portions over time, thereby reducing instantaneous power consumption and processing complexity while maintaining overall data transmission capacity.
2Productivity
If wideband PDSCH transmissions are scheduled for reduced capability UEs, then data transmission capacity is improved, but processing complexity increases
Solution Approach 1:
The patent divides wideband PDSCH transmissions into multiple smaller transmissions across different slots. Each slot contains a portion of the total data, allowing the reduced capability UE to process each segment independently with limited complexity, while the base station coordinates the overall transmission through multi-slot scheduling.
3Use of energy by moving object
If configured time gaps are introduced between slots for reduced capability UEs, then power saving is improved, but transmission time increases
Solution Approach 1:
The patent implements dynamic scheduling where the base station determines configured time gaps between slots based on the specific needs of reduced capability UEs. The time gaps are adjusted dynamically to balance power saving requirements with transmission efficiency, allowing the UE to enter lower-power states during gaps while maintaining acceptable overall transmission time.
Data Source
AI summary
In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives, in a first slot and from a base station, a first signal that is a downlink data signal in a first frequency resource allocation. The UE communicates, with the base station, a second signal in a second slot. A configured time gap between the first slot and the second slot is according to a comparison of the first frequency resource allocation and a second frequency resource allocation.